Fuel-saver.



J. MANUEL.

FUEL SAVER.

7 APPLICATION FILED APR.8, 1915.

1,16 ,951, Patented Jan.18, 1916.

I I 49 23 A9 e D X f I I A;

l/VI/E/VTOR J M4212 dad THE COLUMBXA PLANDGRAPH c0 WASHINGTON. D. C.

JACOB MANDEL, or NEW YORK,1 N. Y.

FUEL-SAVER.

I Application filed'April 8, 1915. Serial No. 19,937.

To all 1071 0171 it may concern: 7

Be it known that I, JACOB MANonL, a citi-' zen of the United States, and resident of the city of NewfYork, borough. of Manhattan, in the county and State of New York, have invented a new and improved Fuel Saver, of which the following is a full, clear, and exact description.

This invention relates to stoves and furnaces, and has particular referenceto attachments for fuel burners for the purpose of causing a more uniform and complete combustion of .the fuel than usually takes place. 1

Among the objects of the invention, there combining with the gases tending to escape,

will create a condition of uniform draft and nearly perfect and complete combustion,

Another object of the invention is to establish a certain definite ratio between the upward draft through the pipe or flue to the downward pressure created thereby, thus increasing the downward pressure in proportion to the upward draft.

The foregoing and other objects of the invention will hereinafter be more fully described and claimed and illustrated in the drawings forming a part of this specification in which like characters of reference indicate corresponding parts in all the views, and in which- Figure 1 is a vertical sectional view of a preferred embodiment of the invention; and Fig. 2 is a horizontal view, partly in section, on the line 22 of Fig. 1, arrows on both figures indicating the supposed direction of movement of the currents and fan- The several parts of this device may be,

Specification of Letters iatent.

Patented J an. 18, 1916.

and the diameter of the inner'shell 11 corresponding preferably to'a standard diameter of stove pipe or'furnace flue for which the drum structure is designed, the device taking the place of one length or joint of such pipeor flue. The shells 11 and 12 are or may be of substantially the same length, but the inner shell projects sufficiently above the outer one to receive the next pipe joint thereupon in the usual manner of connectri s.

ing stove pipe joints. The space between theshe'lls is bridged at the upper end of the shell 12 by an annular collar 13having holes l3 theret-hrough of suitable size; otherwise the space between the upper end of the shell 12 and the shell 11 is closed. The collar,

therefore, servesas a connector and brace between the two shells.

The lower ends of the shells 11 and 12 are connected rigidly by a frusto-conical rim 1% flaring downwardly. This rim has a series of perforations 14:" therethrough, preferably considerably smaller in area than the holes 13. i F

At the lower end of the drum is formed a substantially cylindrical collar 15 of a size adapted to fit over the next lower pipe or flue joint. This collar'is connected to the lower end of the shell 12 by an imperforate upwardly flaring frusto-conical rim 16 making a strong rigid support for the several shells and connecting parts and forming within the rims 14: and 16 a sort of combustion or mixing chamber for the upwardly disposed gases and downwardly directed currents of air.

At any suitable place within the shell 11 and journaled upon an. axis parallel to or coinciding with the axis of the shell 11 is a fan 17 having a plurality of blades radially arranged but each inclined or formed in such a manner as to be acted upon by the normal upward draft in the pipe or flue through the shell, 11. The axis 18 of the fan is shown journaled in bearings 19 and 20 in a IlglCl bracing device 21 secured wlthin the shell 11 and transversely thereof. The bracing device preferably comprises two substantiallyv parallel bars having feet or ends turned at an angle to the main portions thereof and secured snugly and rigidly against the inner surface of the shell 11 on opposite sides of a circumferential slot formed entirely around the shell 11 in the plane of the axes of the wings or blades of r the fan and through which slot the ribs22 constitutingrthe axes 0f the fan blades eX- tend into the space between the two shells.

Upon these outer ends of theribs 22- are secured auxiliary :fan blades 23, the axes, of

which are in alinement with the respective main fan-Wings but inclined in the opposite direction; Theupwardor outward currents of air or products of combustion passing through'the shell 11 acting upon the main fanblades cause a'orotation of the fanin the directionindicatedin'Fi'gQ; The auxiliary fan blades 23*beingcarried rigidly by'the ribs22 ofthe fan 'arehe'nce caused'to sweep,

around in the space between the two shells with a velocity proportional with the, ie

looity of movement of the main fan wings.

. Since the auxiliary wings are so inclined as too difrect the AflP'ClOWHWaIdlY-Witl1i11.the spacesbetween thevtwo shells, fresh air'is' odra vnffreely downwardly through the holes dueto varying? conditions of; combustion in the stove orfurnace or outside Weathercondltlons', the forcelof the auxiliary fan blades 28 acting downwardlyvup'on' the fresh air will be proportionally increased. I

i V Itis vvell knownthat in theusual furnace i I conditions, large quantities of valuable fuel T are asted in theiform. of unconsumed gas or smoke delivered fronithe flue or chimney. I am aware furthermore that previous atcause the introduction and; downwardform ing 'of'gsuch freshair by means of-f devic'es Whose efiect isvariable directly in 'pr0portion to'theoutward draft. e r r axis ofsaid shell, said rotary device includ- 'ing a series of Wings inclinedrsoflas to be: acted upon in a certain"direction by the '7 force of the draft, throughztlie inner; shell,

auxiliary Wings connected tothemain Wings and sweeping around the inner shell within In a fuel -saver,the' combination of aishell' vthroughwhich an outward draft'is adapted to passfa shell surrounding the firstmenw tioned shell'andspac'ed therefrom, arotary device journaled'vvithin the' inner shell and movable in 'a plane perpendicularfto the thespace between rtheftwo shells, the auxiliary" wings being "inclined in a direction to cause acurrent of air through said space be-' 'tweengthe shells in a direction opposite to 3 the'direction'of draft and to thespace With-=- in the inner shell, and means to support the -two shells. 1V

" i ifJA'COB Witnesses: 7; .7 V G120; L. BEELER V GEO. H.- EMsLIE.

'1 Copies of this patent may be ohtain'e'd for fivecents each by addressingthe Commissioner gramme, i 

